linux-kernel - [PATCH v2 7/9] spi: spi-s3c64xx: Ensure cur

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Message-Id: <20200821161401.11307-8-l.stelmach@samsung.com>
Date:   Fri, 21 Aug 2020 18:13:59 +0200
From:   Łukasz Stelmach <l.stelmach@...sung.com>
To:     Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Andi Shyti <andi@...zian.org>, Mark Brown <broonie@...nel.org>,
        linux-spi@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     m.szyprowski@...sung.com, b.zolnierkie@...sung.com,
        Łukasz Stelmach <l.stelmach@...sung.com>,
        Tomasz Figa <tfiga@...omium.org>
Subject: [PATCH v2 7/9] spi: spi-s3c64xx: Ensure cur_speed holds actual
 clock value

cur_speed is used to calculate transfer timeout and needs to be
set to the actual value of (half) the clock speed for precise
calculations.

Cc: Tomasz Figa <tfiga@...omium.org>
Signed-off-by: Łukasz Stelmach <l.stelmach@...sung.com>
---
 drivers/spi/spi-s3c64xx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index 02de734b8ab1..89c162efe355 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -626,6 +626,7 @@ static int s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd)
 		ret = clk_set_rate(sdd->src_clk, sdd->cur_speed * 2);
 		if (ret)
 			return ret;
+		sdd->cur_speed = clk_get_rate(sdd->src_clk) / 2;
 	} else {
 		/* Configure Clock */
 		val = readl(regs + S3C64XX_SPI_CLK_CFG);
-- 
2.26.2